Topography of mantle transition zone discontinuities beneath Northeast China imaged by receiver function with Ps scattering kernel
文献类型：期刊论文
| 作者 | Yang Fan1,2; Zhang Han4; Li Juan1,2,3; Wang Xin1,2,3; Chen QiFu1,2,3 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 64期号:12页码:4406-4424 |
| 关键词 | Mantle transition zone Receiver function Ps scattering kernel migration Northeast China Subducted slab Changbaishan volcano |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2021P0213 |
| 英文摘要 | Mantle transition zone connects Earth's upper and lower mantle and holds key information on the compositional and thermal states at depths. The depth variation, i.e. topography, of mantle transition zone discontinuities implies regional changes of temperature and/or composition because of their well-established relationship to the solid phase transitions between high-pressure polymorphs of olivine. Based on the teleseismic receiver functions collected from densely deployed permanent network and two temporary arrays in Northeast China, we imaged the transition zone structures using Ps scattering kernel. The results show clear boundaries of the Northwest Pacific slab at the transition zone depth, with a dip angle of about 30 degrees. We observed 20 similar to 40 km depression of the 660-km discontinuity near where prior tomographic studies suggested subducted slab. Such depression may be explained by the lower mantle temperature caused by the cold Pacific plate. Beneath the northwest of Changbaishan and Longgang Volcano, the 660-km discontinuity is elevated by 5 similar to 15 km, indicating high temperature anomalies that may come from upwelling. In contrast, the topography of the 410-km discontinuity reveals a widely spreading 10 km depression in most areas, and it shows obvious regional lateral variation. Such large-scale depression suggests that compositional changes introduced from subduction, such as basalt fraction and water content, also play a role in controlling the 410-km discontinuity topography. The high-resolution three-dimensional topography of the mantle transition zone obtained in this study will motivate further investigations on understanding the transformation of mantle material distribution and energy exchange by subduction plates in Northeast Asia. |
| WOS关键词 | CRUSTAL STRUCTURE ; SLAB ; WATER ; OLIVINE ; SYSTEM ; TEMPERATURES ; INVERSION ; EARTH ; 410KM ; WAVES |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000751863800014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/104922]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Li Juan |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Heilongjiang Mohe Observ Geophys, Beijing 100029, Peoples R China 4.Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA |
| 推荐引用方式 GB/T 7714 | Yang Fan,Zhang Han,Li Juan,et al. Topography of mantle transition zone discontinuities beneath Northeast China imaged by receiver function with Ps scattering kernel[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2021,64(12):4406-4424. |
| APA | Yang Fan,Zhang Han,Li Juan,Wang Xin,&Chen QiFu.(2021).Topography of mantle transition zone discontinuities beneath Northeast China imaged by receiver function with Ps scattering kernel.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,64(12),4406-4424. |
| MLA | Yang Fan,et al."Topography of mantle transition zone discontinuities beneath Northeast China imaged by receiver function with Ps scattering kernel".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 64.12(2021):4406-4424. |
入库方式： OAI收割
来源：地质与地球物理研究所
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